/// <summary>
/// 添加新的对话
/// </summary>
/// <param name="talkValue">对话内容</param>
/// <param name="timeDuration">对话的持续时间</param>
public void AddNewTalk(string talkValue, float timeDuration)
{
if (talkShowObjStructList == null || thisCanvas == null || ExplanObj == null)
{
return;
}
GameObject createObj = GameObject.Instantiate <GameObject>(ExplanObj);
createObj.transform.SetParent(backRect);
createObj.SetActive(true);
RectTransform panel = createObj.GetComponent <RectTransform>();
panel.localScale = Vector3.one;
panel.localEulerAngles = Vector2.zero;
panel.localPosition = new Vector3(panel.localPosition.x, panel.localPosition.y, 0);
Text text = panel.GetChild(1).GetComponent <Text>();
text.text = talkValue;
TalkShowObjStruct talkShowObjStruct = new TalkShowObjStruct()
{
TimeRemaining = timeDuration,
Panel = panel,
Text = text,
CanvasGroup = panel.GetComponent <CanvasGroup>()
};
talkShowObjStructList.Add(talkShowObjStruct);
}
private void Update()
{
float nowHeight = 0;
//更新位置
for (int i = 0; i < talkShowObjStructList.Count; i++)
{
TalkShowObjStruct talkShowObjStruct = talkShowObjStructList[i];
talkShowObjStruct.TimeRemaining -= Time.deltaTime;
if (talkShowObjStruct.TimeRemaining > 1)
{
if (talkShowObjStruct.CanvasGroup.alpha < 1)
{
talkShowObjStruct.CanvasGroup.alpha += Time.deltaTime;
}
}
else if (talkShowObjStruct.TimeRemaining >= 0)
{
talkShowObjStruct.CanvasGroup.alpha = talkShowObjStruct.TimeRemaining;
}
else
{
GameObject.Destroy(talkShowObjStruct.Panel.gameObject);
talkShowObjStructList.Remove(talkShowObjStruct);
continue;
}
//查看此时的text高度
float tempHeight = talkShowObjStruct.Text.GetComponent <RectTransform>().rect.height;
//不需要设置面板高度,因为面板是被上层控制大小的
nowHeight += tempHeight + 15;
}
//Rect canvasRect = thisCanvas.pixelRect;
//canvasRect.height = nowHeight;
RectTransform rectTrans = thisCanvas.GetComponent <RectTransform>();
rectTrans.SetSizeWithCurrentAnchors(RectTransform.Axis.Vertical, nowHeight);
//根据摄像机更新方向
Camera mainCamera = Camera.main;
Vector3 cameraForward = mainCamera.transform.forward;
cameraForward.y = 0;
cameraForward.Normalize();
thisCanvas.transform.forward = cameraForward;
}
